cs1180的arduino驱动程序

#define cs      2 //CS1180片选,低电平有效

#define sdi 3 //CS1180数据输入

#define sdo 4 //CS1180数据输出

#define sclk 5 //CS1180时钟

#define drdy 6 //CS1180数据准备就绪,低电平有效

//写一个字节

void WriteSPI_CS1180(unsigned char DData)

{

unsigned char i;

//sclk=HIGH;

digitalWrite(sclk,HIGH);

for(i=8;i>0;i--)

{

//sdi=(bit)(DData & 0x80);

digitalWrite(sdi,highByte(DData & 0x80));

DData<<=1;

//sclk=LOW;

digitalWrite(sclk,LOW);

//Delay5us();

delayMicroseconds(5);

//sclk=HIGH;

digitalWrite(sclk,HIGH);

//Delay5us();

delayMicroseconds(5);

}

}

//读一个字节

unsigned char ReadSPI_CS1180(void)

{

unsigned char tempdata=0;

unsigned char i=0;

//sclk=HIGH;

digitalWrite(sclk,HIGH);

for(i=8;i>0;i--)

{

tempdata<<=1;

//sclk=LOW;

digitalWrite(sclk,LOW);

//Delay5us();

delayMicroseconds(5);

tempdata |=digitalRead(sdo);

//sclk=HIGH;

digitalWrite(sclk,HIGH);

//Delay5us();

delayMicroseconds(5);

}

return tempdata;

}

//初始化CS1180

void init_CS1180()

{

//cs=0;

digitalWrite(cs,LOW);

WriteSPI_CS1180(0xfe); //发送芯片复位指令

//Delay5ms();

delay(5);

WriteSPI_CS1180(0x50); //写寄存器首地址

WriteSPI_CS1180(0x02); //写入寄存器的数量为2+1=3

//WriteSPI_CS1180(0x52);

WriteSPI_CS1180(0x06); //增益64

WriteSPI_CS1180(0x01); //正常使用，配置01

WriteSPI_CS1180(0x24); //双极性

//Delay5ms();

delay(5);

//while(drdy);

//while(drdy);

while(digitalRead(drdy)==HIGH);

while(digitalRead(drdy)==HIGH);

ReadSPI_CS1180(); //空读一次，做抛弃处理，因为第一次读数不正确

//Delay5ms();

delay(5);

}

//读AD值

void GetAD_CS1180()

{

unsigned char ad[3];

//while(drdy);

while(digitalRead(drdy)==HIGH);

WriteSPI_CS1180(0x01);

//Delay5us();

delayMicroseconds(5);

ad[0]=ReadSPI_CS1180();

ad[1]=ReadSPI_CS1180();

ad[2]=ReadSPI_CS1180();

//ad[3]=PINSWITCH;

/*

sendChar(0x0C);

sendChar(0x55);

sendChar(ad[0]); //High byte

sendChar(ad[1]); //Middle byte

sendChar(ad[2]); //Low byte

sendChar(ad[3]); //Low byte

sendChar((0x0C+0x55+ad[0]+ad[1]+ad[2]+ad[3]) & 0xff);

*/

Serial.println((ad[0]<<16)+(ad[1]<<8)+ad[2]);

// Serial.println(ad[1]);

//Serial.println(ad[2]);

}

void setup()

{

pinMode(cs,OUTPUT);

pinMode(drdy,INPUT);

pinMode(sclk,OUTPUT);

pinMode(sdi,OUTPUT);

pinMode(sdo,INPUT);

init_CS1180();

Serial.begin(9600);

}

void loop()

{

GetAD_CS1180();

}